I should have gotten a bigger heavier mat this one is good except it is not made for my carpet my mistake for not getting the better one. Nothing wrong with this one I only need it temporary
I buy one of these from staples every 1 to 1.5 years. They break apart. Supposedly there is a one year mfr warranty. A more expensive 3 year warranty on heavier gauge mat is available; however no one in the store knew anything or had any documentation. It was not in the computer as a clear policy statement. Not up for the glass mat and want to protect the flooring so stuck with a disposable chair mat.
It arrived flat which was nice. Not as stiff as I had hoped and the bumps on the bottom that go into the carpet are not as long as I had hoped. I have a thicker carpet and I need to keep readjusting it because it slides---not much but enough where I need to keep shifting the mat. If I didn' t have such a thick carpet it probably would work fine.